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New 3T9561 Glow Plug Replacement suitable for Caterpillar Equipment
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Description for 3T9561 Glow Plug
â–¶Specification for 3T9561 Glow Plug
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Customer Reviews
Science I buy parts from propel parts I don’t have to spend too much down time always on time and good service
Great pricing and fast shipping!
I'll admit that I was skeptical of propel parts, but they are an honest site and came through with the order. I was skeptical because I've never ordered heavy machinery parts, and didn't know who to trust. The parts that I ordered showed in stock, but after checking with their vendor, they only had half of the order in stock. I was notified the day after the order, and most of the parts arrived in a few days. There was one part that was not shipped putz but I was able to talk with who I assumed is the owner who rectified the situation and had the part overnighted to me.
I will say that communication speed could use a little work, but they will eventually get back with you.
Great service at an affordable price to get my machine back going.
Propel parts is a very reliable parts source for heavy equipment
Quick response,good quality parts,favourable prices and always deliver on time
Great prices prompt courteous customer service and fast shipping.
To my country the company is doing great
The products they market is good and
Affordable.
They can delivery to any country, stree free.
Tested and trusted.
Amazing Help.
I don't know who I spoke with, but they were helpful. We will be buying those parts shortly.
Propel parts is a good Cat vendor that provides a top notch service to customers from ordering to delivery. Their after sales service is really impressive.
Above and Beyond
Staff took care of issue that was nit created by them. Package was lost by UPS. Propel sent me another part Next Day Air to correct it.
:) great service
Product Questions
Frequently Asked Questions
What is the 3T9561 plug used for?
The 3T9561 plug seals an opening or heats/ignites as its design requires, keeping the system closed or supporting combustion. Its correct function protects the assembly.
How do I install the 3T9561 plug?
A reliable installation of the 3T9561 starts with inspection and ends with verification. Follow this process:
- Shut off and cool the engine, then disconnect power if electrical
- Remove the old plug and clean the threads and seat
- Inspect the bore and threads for damage
- Thread the 3T9561 in by hand, then torque to specification
- Reconnect any wiring and test for correct operation
Which Caterpillar machines is the 3T9561 compatible with?
The 3T9561 is matched to particular Caterpillar equipment, so always verify the application against your parts reference before purchasing. Or reach out to Propel Parts for help verifying fitment.
Does the 3T9561 plug meet performance standards?
Yes. Propel Parts supplies the 3T9561 as a premium aftermarket part made to meet OEM specifications. When replacing, choose genuine or high-quality aftermarket parts that meet or exceed OEM specifications so you can fit it with confidence.
How often should the 3T9561 be replaced?
Replace the 3T9561 whenever the assembly it serves is overhauled, or any time it shows wear, damage, or corrosion. Following the intervals in your service manual is the best guide.
What are the signs of a worn or failing 3T9561 plug?
Catching a failing 3T9561 early prevents wider damage. The common warning signs include:
- Leaks or loss of pressure at the plug
- Hard starting or rough running (for heating/ignition types)
- Corroded or damaged threads
- Warning indicators related to the circuit
Why is the 3T9561 important, and what related parts work with it?
Keeping the 3T9561 in good condition protects the components around it and supports smooth, reliable operation. Maintaining the assembly with parts that meet OEM specifications helps you avoid unplanned downtime. Related hardware on our site includes 6V5597 Seal and 1337068 Gasket Ctp.
Compatible Models
This 3T9561 Glow Plug is compatible with the following models:
D330C, D333C, 3304, 3306 & more...
Shipping | Returns
Shipping
We know equipment downtime costs money, so fast and reliable shipping is a priority at Propel Parts. Orders placed on weekdays before 3:00 PM ET typically ship the same day, with expedited delivery options available for many locations when time is critical.
We ship across the U.S., Canada, and over 130 countries worldwide, helping customers keep machines running wherever they operate. Available shipping methods and delivery estimates are shown at checkout so you can select the option that best fits your timeline.
Tracking information is emailed within 24–48 hours after your order is processed, giving you full visibility from dispatch to delivery and peace of mind that your parts are on the way.
Easy Returns
Our refund policy is simple. We offer a 30-day, no-hassle return policy, and we make every effort to provide the best service and highest-quality parts possible. If you’re not fully satisfied with your purchase, you may return it within 30 days for a refund. Full details are available on our Returns Policy page.
Warranty
Buy with confidence. All parts from Propel Parts are covered against material or manufacturer defects for 12 months from the original invoice date. We stand behind every part we sell, so you can count on reliable performance and dependable support. Full details are available on our Warranty Policy page.
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